package study.exception;


import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;

public class AssetTestMain {
    public static void main(String[] args) {
        User user = new User();
        if(ObjectUtils.isNotNull(user.getId())){
            System.out.println("我的ID不为空");
        }else {
            System.out.println("我的ID是空的");
        }
    }
}
